Toyota Avalon (XX50): Front Suspension Member(for Gasoline Model)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Suspension / Front Suspension / Front Suspension Member(for Gasoline Model)

Components

COMPONENTS

ILLUSTRATION

*1	FRONT FRAME ASSEMBLY	*2	WIRE HARNESS
*3	FRONT ENGINE MOUNTING INSULATOR	*4	REAR ENGINE MOUNTING INSULATOR
	Nm (kgfcm, ft.*lbf): Specified torque	-	-

ILLUSTRATION

*1	FRONT FRAME ASSEMBLY	*2	FRONT LOWER NO. 1 SUSPENSION ARM SUB-ASSEMBLY LH
*3	FRONT LOWER NO. 1 SUSPENSION ARM SUB-ASSEMBLY RH	*4	FRONT STABILIZER BAR WITH BRACKET
*5	NO. 2 EXHAUST PIPE SUPPORT BRACKET	*6	RACK AND PINION POWER STEERING GEAR ASSEMBLY
*7	FRONT LOWER ARM BUSHING STOPPER	-	-
	Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": Nm (kgfcm, ft.*lbf)		Nm (kgfcm, ft.*lbf): Specified torque
●	Non-reusable part	-	-

ILLUSTRATION

*1	FRONT FRAME ASSEMBLY	*2	FRONT SUSPENSION MEMBER BODY MOUNTING FRONT CUSHION
*3	FRONT SUSPENSION MEMBER BODY MOUNTING FRONT STOPPER	*4	FRONT SUSPENSION MEMBER BODY MOUNTING REAR CUSHION
*5	FRONT SUSPENSION MEMBER BODY MOUNTING REAR CUSHION LH	*6	FRONT SUSPENSION MEMBER BODY MOUNTING REAR STOPPER
*7	FRONT SUSPENSION MEMBER DYNAMIC DAMPER	*8	HOLE PLUG
	Nm (kgfcm, ft.*lbf): Specified torque	●	Non-reusable part

Installation

INSTALLATION

PROCEDURE

1. INSTALL HOLE PLUG

(a) Install the 7 hole plugs to the front frame assembly.

HINT:

There are 2 different shapes of hole plug.

2. INSTALL FRONT SUSPENSION MEMBER BODY MOUNTING REAR CUSHION LH

(a) Align a new front suspension member body mounting rear cushion LH as shown in the illustration and set it to the front frame assembly.

*a	View from Underneath
	Front of the Vehicle

NOTICE:

Position the front suspension member body mounting rear cushion LH in the correct direction.
Do not apply lubricant to the outer sleeve of the front suspension member body mounting rear cushion LH.

(b) Install SST as shown in the illustration.

SST: 09570-24011

SST: 09830-10010

09830-01010

09830-01020

09830-01040

09830-01060

NOTICE:

Apply molybdenum grease to the threads and tip of the SST center bolt before use.

*1	Front Suspension Member Body Mounting Rear Cushion LH

*a	Hold
	Turn

NOTICE:

Check that there is no clearance between the front frame assembly and the front suspension member body mounting rear cushion LH.

3. INSTALL FRONT SUSPENSION MEMBER BODY MOUNTING REAR CUSHION

(a) Align a new front suspension member body mounting rear cushion as shown in the illustration and set it to the front frame assembly.

*a	View from Underneath
	Front of the Vehicle

NOTICE:

Position the front suspension member body mounting rear cushion in the correct direction.
Do not apply lubricant to the outer sleeve of the front suspension member body mounting rear cushion.

(b) Install SST using the same procedure as for the front suspension member body mounting rear cushion LH.

SST: 09570-24011

SST: 09830-10010

09830-01010

09830-01020

09830-01040

09830-01060

NOTICE:

Apply molybdenum grease to the threads and tip of the SST center bolt before use.

NOTICE:

Check that there is no clearance between the front frame assembly and the front suspension member body mounting rear cushion.

HINT:

Perform the same procedure as for the front suspension member body mounting rear cushion LH.

4. INSTALL FRONT SUSPENSION MEMBER BODY MOUNTING FRONT CUSHION (for LH Side)

(a) Align a new front suspension member body mounting front cushion as shown in the illustration and set it to the front frame assembly.

*a	View from Underneath
	Front of the Vehicle

NOTICE:

Position the front suspension member body mounting front cushion in the correct direction.
Do not apply lubricant to the outer sleeve of the front suspension member body mounting front cushion.

(b) Install SST as shown in the illustration.

SST: 09830-10010

09830-01010

09830-01020

09830-01030

09830-01060

NOTICE:

Be sure to install SST (09830-01030) in the correct direction.
Apply molybdenum grease to the threads and tip of the SST center bolt before use.

*1	Front Suspension Member Body Mounting Front Cushion

*a	Hold
	Turn

NOTICE:

Check that there is no clearance between the front frame assembly and the front suspension member body mounting front cushion.

5. INSTALL FRONT SUSPENSION MEMBER BODY MOUNTING FRONT CUSHION (for RH Side)

(a) Align a new front suspension member body mounting front cushion as shown in the illustration and set it to the front frame assembly.

*a	View from Underneath
	Front of the Vehicle

NOTICE:

Position the front suspension member body mounting front cushion in the correct direction.
Do not apply lubricant to the outer sleeve of the front suspension member body mounting front cushion.

(b) Install SST using the same procedure as for the LH side.

SST: 09830-10010

09830-01010

09830-01020

09830-01030

09830-01060

NOTICE:

Be sure to install SST (09830-01030) in the correct direction.
Apply molybdenum grease to the threads and tip of the SST center bolt before use.

NOTICE:

Check that there is no clearance between the front frame assembly and the front suspension member body mounting front cushion.

HINT:

Perform the same procedure as for the LH side.

6. INSTALL FRONT SUSPENSION MEMBER BODY MOUNTING REAR STOPPER

(a) Install the 2 front suspension member body mounting rear stoppers to the front frame assembly.

7. INSTALL FRONT SUSPENSION MEMBER BODY MOUNTING FRONT STOPPER

(a) Install the 2 front suspension member body mounting front stoppers to the front frame assembly.

8. INSTALL FRONT SUSPENSION MEMBER DYNAMIC DAMPER

(a) Install the front suspension member dynamic damper to the front frame assembly with the 2 bolts.

Torque:

29 N·m {296 kgf·cm, 21 ft·lbf}

9. INSTALL NO. 2 EXHAUST PIPE SUPPORT BRACKET

(a) Install the No. 2 exhaust pipe support bracket to the front frame assembly with the 2 bolts.

Torque:

29 N·m {296 kgf·cm, 21 ft·lbf}

10. INSTALL FRONT LOWER NO. 1 SUSPENSION ARM SUB-ASSEMBLY LH

(a) Install the front lower arm bushing stopper to the front lower No. 1 suspension arm sub-assembly.

(b) Install the front lower No. 1 suspension arm sub-assembly to the front frame assembly with the 3 bolts and nut in the order shown in the illustration.

Torque:

Bolt (1), (2) :

200 N·m {2039 kgf·cm, 148 ft·lbf}

Bolt (3) :

135 N·m {1377 kgf·cm, 100 ft·lbf}

NOTICE:

Because the nut has its own stopper, do not turn the nut. Tighten the bolt with the nut secured.

11. INSTALL FRONT LOWER NO. 1 SUSPENSION ARM SUB-ASSEMBLY RH

HINT:

Perform the same procedure as for the LH side.

12. INSTALL RACK AND PINION POWER STEERING GEAR ASSEMBLY

Click here

13. INSTALL FRONT STABILIZER BAR WITH BRACKET

Click here

14. INSTALL FRONT FRAME ASSEMBLY

(a) Install the rear engine mounting insulator to the front frame assembly with the 4 nuts.

Torque:

72 N·m {734 kgf·cm, 53 ft·lbf}

(b) Install the front engine mounting insulator to the front frame assembly with the 3 nuts.

Torque:

72 N·m {734 kgf·cm, 53 ft·lbf}

15. CONNECT WIRE HARNESS

Click here

16. INSTALL ENGINE ASSEMBLY WITH TRANSAXLE

Click here

Removal

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during front frame assembly removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
Battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	Lane departure alert system (w/ Steering Control)
		Pre-collision system
		Intelligent clearance sonar system*1
		Lighting system (for Gasoline Model with Cornering Light)
	Memorize steering angle neutral point	Parking assist monitor system
	Memorize steering angle neutral point	Panoramic view monitor system
Replacement of ECM	Vehicle Identification Number (VIN) registration	MIL comes on
Replacement of ECM	Perform code registration (Immobiliser system)	Engine start function
Replacement of engine assembly Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.
Replacement of automatic transaxle assembly	Reset Memory Input transaxle compensation code into ECM Perform road test to allow ECM to learn	Large shift shock Deterioration of fuel efficiency	for Initialization: for Registration:
Replacement of ECM (If transaxle compensation code read from ECM)	Reset memory*2 Transfer transaxle compensation code Perform road test to allow ECM to learn
Replacement of ECM (If transaxle compensation code not read from ECM)	Reset memory*2 Reset transaxle compensation code Perform road test to allow ECM to learn
Replacement of automatic transaxle fluid	ATF thermal degradation estimate reset	The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly
Replacement of ECM	Code registration (Smart Key System (for Start Function))	Wireless Door Lock Control System Smart Key System (for Entry Function) Smart Key System (for Start Function) Steering lock function
Suspension, tires, etc.	Measure ultrasonic sensor detection angle Ultrasonic sensor detection angle registration	Intelligent Clearance Sonar System Intuitive Parking Assist System
	Rear television camera assembly optical axis adjustment (Back camera position setting)	Parking Assist Monitor System	for Initialization: for Calibration:
	Parking assist ECU initialization Adjust steering angle Television camera assembly optical axis adjustment (Back camera position setting)	Panoramic View Monitor System	for Initialization: for Calibration:
	Perform headlight ECU sub-assembly LH initialization	Lighting system (for Gasoline Model with Cornering Light)
Front wheel alignment adjustment	Perform system variant learning and acceleration sensor zero point calibration.	VSC is disabled or malfunctions DTCs are output Slip indicator light illuminates ABS warning light illuminates
Rack and pinion power steering gear assembly	Perform torque sensor zero point calibration Assist map writing	DTCs are output Steering effort different between turning steering wheel left and right EPS warning light illuminates

*1: When performing learning using the Techstream.

Click here

*2: Not necessary when ECM replaced with new one

PROCEDURE

1. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE

Click here

2. INSTALL ENGINE HANGERS

Click here

3. DISCONNECT WIRE HARNESS

Click here

4. REMOVE FRONT FRAME ASSEMBLY

(a) Remove the 3 nuts and separate the front engine mounting insulator from the front frame assembly.

(b) Remove the 4 nuts and separate the rear engine mounting insulator from the front frame assembly.

5. REMOVE FRONT STABILIZER BAR WITH BRACKET

Click here

6. REMOVE RACK AND PINION POWER STEERING GEAR ASSEMBLY

Click here

7. REMOVE FRONT LOWER NO. 1 SUSPENSION ARM SUB-ASSEMBLY LH

(a) Remove the 3 bolts, nut and front lower No. 1 suspension arm sub-assembly LH from the front frame assembly.

NOTICE:

Because the nut has its own stopper, do not turn the nut. Loosen the bolt with the nut secured.

(b) Remove the front lower arm bushing stopper from the front lower No. 1 suspension arm sub-assembly.

8. REMOVE FRONT LOWER NO. 1 SUSPENSION ARM SUB-ASSEMBLY RH

HINT:

Perform the same procedure as for the LH side.

9. REMOVE NO. 2 EXHAUST PIPE SUPPORT BRACKET

(a) Remove the 2 bolts and No. 2 exhaust pipe support bracket from the front frame assembly.

10. REMOVE FRONT SUSPENSION MEMBER DYNAMIC DAMPER

(a) Remove the 2 bolts and front suspension member dynamic damper from the front frame assembly.

11. REMOVE FRONT SUSPENSION MEMBER BODY MOUNTING FRONT STOPPER

(a) Remove the 2 front suspension member body mounting front stoppers from the front frame assembly.

12. REMOVE FRONT SUSPENSION MEMBER BODY MOUNTING REAR STOPPER

(a) Remove the 2 front suspension member body mounting rear stoppers from the front frame assembly.

13. REMOVE FRONT SUSPENSION MEMBER BODY MOUNTING FRONT CUSHION (for LH Side)

(a) Using a chisel and hammer, kink the flange of the front suspension member body mounting front cushion as shown in the illustration.

Flange

(b) Apply lubricant to the contact surfaces of the front suspension member body mounting front cushion.

SST: 09830-10010

09830-01010

09830-01040

09830-01050

SST: 09950-40011

09951-04020

09952-04010

09954-04010

09955-04011

09958-04011

NOTICE:

Apply molybdenum grease to the threads and tip of the SST center bolt before use.

*1	Front Suspension Member Body Mounting Front Cushion

(d) Turn the SST center bolt as shown in the illustration to create a clearance between the front suspension member body mounting front cushion and the front frame assembly.

*a	Hold
	Turn

(e) While applying lubricant to the front suspension member body mounting front cushion through the clearance, gradually remove the front suspension member body mounting front cushion.

NOTICE:

Tighten SST slowly and evenly.
Be careful as the mounting cushion may fly out.
The mounting cushion cannot be reused.

14. REMOVE FRONT SUSPENSION MEMBER BODY MOUNTING FRONT CUSHION (for RH Side)

HINT:

Perform the same procedure as for the LH side.

15. REMOVE FRONT SUSPENSION MEMBER BODY MOUNTING REAR CUSHION LH

(a) Using a chisel and hammer, kink the flange of the front suspension member body mounting rear cushion LH as shown in the illustration.

Flange

(b) Apply lubricant to the contact surfaces of the front suspension member body mounting rear cushion LH.

SST: 09830-10010

09830-01010

09830-01040

09830-01050

SST: 09950-40011

09951-04020

09952-04010

09954-04010

09955-04011

09958-04011

NOTICE:

Apply molybdenum grease to the threads and tip of the SST center bolt before use.

*1	Front Suspension Member Body Mounting Rear Cushion LH

(d) Turn the SST center bolt as shown in the illustration to create a clearance between the front suspension member body mounting rear cushion LH and the front frame assembly.

*a	Hold
	Turn

(e) While applying lubricant to the front suspension member body mounting rear cushion LH through the clearance, gradually remove the front suspension member body mounting rear cushion LH.

NOTICE:

Tighten SST slowly and evenly.
Be careful as the mounting cushion may fly out.
The mounting cushion cannot be reused.

16. REMOVE FRONT SUSPENSION MEMBER BODY MOUNTING REAR CUSHION

HINT:

Perform the same procedure as for the front suspension member body mounting rear cushion LH.

17. REMOVE HOLE PLUG

(a) Remove the 7 hole plugs from the front frame assembly.

HINT:

There are 2 different shapes of hole plug.

Front Stabilizer Bar

Front Suspension Member(for Hv Model)

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